Display including nanoscale LED module

Abstract

Provided is a display including a very-small light-emitting diode (LED) and a method of manufacturing the same. The display includes a panel in which first and second signal lines are disposed in a lattice form, an LED module including an electrode assembly having a first electrode connected to the first signal line, a second electrode connected to a ground, and a plurality of very-small LEDs connected to the first and second electrodes, and two or more switches which connect the first and second electrodes to the first signal line, wherein the second electrode is connected to a common electrode formed on the panel, at least one other LED module is grounded to the common electrode, and the two or more switches selectively provide a current supplied through the first signal line to the first electrode on the basis of a signal of the first and second signal lines.

What is claimed is: 
     
       1. A display comprising:
 a panel on which a first signal line and a second signal line are disposed; 
 a first electrode connected to the first signal line and the second signal line; 
 a second electrode connected to a ground; 
 a plurality of light emitting diodes (LEDs) connected to at least one of the first electrode and the second electrode, 
 wherein the first electrode and the second electrode are disposed on a substrate and are spaced apart from each other on the substrate, and 
 the plurality of LEDs are disposed to be parallel to the substrate, and at least some of the plurality of LEDs are connected in parallel between the first electrode and the second electrode to be in opposite directions; and 
 two or more switches which connect the first electrode to the first signal line and the second signal line, 
 wherein source and drain electrodes of one of the two or more switches and source and drain electrodes of another of the two or more switches are connected to be in opposite directions to each other. 
 
     
     
       2. The display of  claim 1 , wherein a solution including the plurality of LEDs is applied to the first electrode and the second electrode, alternating current (AC) power is supplied to the first electrode and the second electrode, the plurality of LEDs are simultaneously connected to the first electrode and the second electrode, and a plurality of subpixels are formed. 
     
     
       3. The display of  claim 2 , wherein, in the subpixels, the number of the plurality of LEDs included in a 100×100 μm 2  area ranges from 2 to 100,000. 
     
     
       4. The display of  claim 1 , wherein the plurality of LEDs include at least one LED formed to emit light in a blue, green, red, and amber wavelength bands. 
     
     
       5. The display of  claim 1 , wherein the plurality of LEDs include at least one LED color conversion element in which a color conversion layer, through which light having some wavelengths among green, red, and amber wavelengths converted from light in a blue wavelength band is emitted, is formed. 
     
     
       6. The display of  claim 1 , wherein the plurality of LEDs includes at least one LED color conversion element in which a color conversion layer, through which light having some wavelengths among blue, green, red, and amber wavelengths converted from light in ultraviolet and near-ultraviolet wavelength bands is emitted, is formed. 
     
     
       7. The display of  claim 1 , wherein the plurality of LEDs includes an LED in which a length of the LED ranges from 100 nm to 10 μm, and an insulating film disposed on at least an outer circumferential surface of an active layer of the LED is formed. 
     
     
       8. The display of  claim 1 , wherein the second electrode is connected to a common electrode formed on the panel; and wherein
 the two or more switches selectively provide a current supplied through the first signal line to the first electrode on the basis of a signal of the first signal line and a signal of the second signal line. 
 
     
     
       9. The display of  claim 8 , wherein the common electrode includes a graphene film. 
     
     
       10. The display of  claim 8 , wherein the common electrode includes a metal nanowire film. 
     
     
       11. The display of  claim 1 , further comprising an inverter configured to convert a direct current (DC) into an AC and supply the AC to the first signal line,
 wherein the AC is selectively supplied to the first electrode on the basis of a signal of the first signal line and a signal of the second signal line. 
 
     
     
       12. The display of  claim 1 , wherein the first signal line connected to the first electrode includes two or more lines. 
     
     
       13. The display of  claim 1 , wherein a distance between the first electrode and the second electrode in a length direction of the plurality of LEDs is less than the length of the plurality of LEDs. 
     
     
       14. The display of  claim 13 , wherein the plurality of LEDs includes an LED in which at least one end of the LED is disposed on the first electrode or the second electrode. 
     
     
       15. The display of  claim 1 , wherein the second electrode faces at least two sides of the first electrode. 
     
     
       16. The display of  claim 8 , wherein the common electrode includes an indium tin oxide (ITO) film. 
     
     
       17. The display of  claim 1 , wherein the two or more switches comprise a first switch coupled to a first polarity terminal of at least one of the plurality of LEDs, and a second switch coupled to a second polarity terminal of at least one other of the plurality of LEDs.